Inflation Calculator

Different countries and periods see very different inflation. Rather than guess for you with stale CPI data, the calculator lets you enter the average annual rate that matches your country and the years you care about. The default of 3% is a rough long-run U.S. average.

No. Official CPI calculators (like the U.S. BLS one) compound a measured year-by-year index. This calculator assumes one constant rate across the whole period, which is faster but less precise.

It is roughly the long-run U.S. average since 1913, but recent decades have been lower (closer to 2%) and individual years have spiked far higher — 2022 saw U.S. CPI above 8%. If you are translating across a specific period, look up the actual average rate for those years and override the default.